DVD choppy
Philip Walden
pwaldenlinux at pacbell.net
Mon Jan 29 22:28:19 UTC 2007
Philip Walden wrote:
> Dotan Cohen wrote:
>> On a recent Dell laptop, what would cause DVD playback to be very
>> choppy?
> Besides the ATA DMA stuff, you may also want to check whether your
> MTRR is being set properly by the xorg X server.
>
> Mine looks like this:
>
> cat /proc/mtrr
> reg00: base=0x00100000 ( 1MB), size= 256MB: write-back, count=1
> reg01: base=0xfc000000 (4032MB), size= 32MB: write-combining, count=1
>
> You should have at least one "write-combining" entry which means the
> graphics card is set properly. Otherwise, performance can drop
> dramatically.
Here is a howto:
http://www.faqs.org/docs/Linux-HOWTO/DVD-HOWTO.html#ss6.1
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